<script type="text/javascript" >
     function g_search1() {$('#topscrt').fadeOut(100,function(){$('.que').animate({width:'590px'},100)});}
function g_search2() {$('.que').animate({width:'129px'},100,function(){$('#topscrt').fadeIn(100);})}
</script>

<div id="topscrt">Текст который должен исчезать(длина 590px поля поиска)</div><!--search-->
<table cellpadding="0" cellspacing="0" class="bg_search">
<tr>
<td width="1"><div class="wtf"> </div></td>
<td class="wht" height="30">
<form id="sub_1" method="post" action="/index/" onsubmit="this.subm.disabled=true;">
<input name="user" type="text" class="que" size="25" value="" maxlength="25" onfocus="g_search1()" onblur="if(this.value==''){g_search2()}" placeholder="Lогин + Enter">
<input type="hidden" name="a" value="15" id="codes">
  <div style="display:none;"><input type="submit" value="15 " name="subm" /></div>
</form>
</td>
</tr>
</table>
<!--/search-->